mks-go

README

mks-go: Go SDK for Managed Kubernetes Service

Package mks-go provides Go SDK to work with the Selectel Managed Kubernetes Service.

Documentation

The Go library documentation is available at go.dev.

What this library is capable of

You can use this library to work with the following objects of the Selectel Managed Kubernetes Service:

• cluster
• nodegroup
• node
• task
• kubeversion

Getting started

Installation

You can install needed mks-go packages via go get command:

go get github.com/selectel/mks-go/pkg/v1/cluster github.com/selectel/mks-go/pkg/v1/task

Authentication

To work with the Selectel Managed Kubernetes Service API you first need to:

• Create a Selectel account: registration page.
• Create a project in Selectel Cloud Platform projects.
• Retrieve a token for your project via API or go-selvpcclient.

Endpoints

Selectel Managed Kubernetes Service currently has the following API endpoints:

URL	Region
https://ru-1.mks.selcloud.ru/v1	ru-1
https://ru-2.mks.selcloud.ru/v1	ru-2
https://ru-3.mks.selcloud.ru/v1	ru-3
https://ru-7.mks.selcloud.ru/v1	ru-7
https://ru-8.mks.selcloud.ru/v1	ru-8

You can also retrieve all available API endpoints from the Identity catalog.

Usage example

package main

import (
	"context"
	"fmt"
	"log"

	v1 "github.com/selectel/mks-go/pkg/v1"
	"github.com/selectel/mks-go/pkg/v1/cluster"
	"github.com/selectel/mks-go/pkg/v1/kubeversion"
	"github.com/selectel/mks-go/pkg/v1/nodegroup"
	"github.com/selectel/mks-go/pkg/v1/task"
)

func main() {
	// Token to work with Selectel Cloud project.
	token := "gAAAAABeVNzu-..."

	// MKS endpoint to work with.
	endpoint := "https://ru-3.mks.selcloud.ru/v1"

	// Initialize the MKS V1 client.
	mksClient := v1.NewMKSClientV1(token, endpoint)

	// Prepare empty context.
	ctx := context.Background()

	// Get supported Kubernetes versions.
	kubeVersions, _, err := kubeversion.List(ctx, mksClient)
	if err != nil {
		log.Fatal(err)
	}
	if len(kubeVersions) == 0 {
		log.Fatal("There are no available Kubernetes versions")
	}

	// Use the first version in list.
	kubeVersion := kubeVersions[0]

	// Nodegroup with nodes based on network volumes for root partition.
	firstNodegroup := &nodegroup.CreateOpts{
		Count:            3,
		CPUs:             1,
		RAMMB:            2048,
		VolumeGB:         50,
		VolumeType:       "fast.ru-3a",
		AvailabilityZone: "ru-3a",
	}

	// Nodegroup with nodes based on local volumes for root partition.
	secondNodegroup := &nodegroup.CreateOpts{
		Count:            2,
		CPUs:             2,
		RAMMB:            4096,
		VolumeGB:         20,
		LocalVolume:      true,
		AvailabilityZone: "ru-3a",
	}

	// Build final options for a new cluster.
	createOpts := &cluster.CreateOpts{
		Name:        "test-cluster",
		KubeVersion: kubeVersion.Version,
		Region:      "ru-3",
		Nodegroups: []*nodegroup.CreateOpts{
			firstNodegroup,
			secondNodegroup,
		},
	}

	// Create a cluster.
	newCluster, _, err := cluster.Create(ctx, mksClient, createOpts)
	if err != nil {
		log.Fatal(err)
	}

	// Print cluster fields.
	fmt.Printf("Created cluster: %+v\n", newCluster)

	// Get cluster tasks.
	tasks, _, err := task.List(ctx, mksClient, newCluster.ID)
	if err != nil {
		log.Fatal(err)
	}

	// Print cluster tasks.
	for _, t := range tasks {
		fmt.Printf("Cluster task: %+v\n", t)
	}
}